package com.tutu.reggie.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.conditions.update.LambdaUpdateWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.tutu.reggie.common.R;
import com.tutu.reggie.dto.DishDto;
import com.tutu.reggie.entity.Category;
import com.tutu.reggie.entity.Dish;
import com.tutu.reggie.entity.DishFlavor;
import com.tutu.reggie.service.CategoryService;
import com.tutu.reggie.service.DishFlavorService;
import com.tutu.reggie.service.DishService;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.util.ObjectUtils;
import org.springframework.web.bind.annotation.*;

import java.util.Arrays;
import java.util.List;
import java.util.Set;
import java.util.concurrent.TimeUnit;
import java.util.stream.Collectors;

@Slf4j
@RestController
@RequestMapping("/dish")
@Api(tags = "菜品相关api")
public class DishController {

    @Autowired
    private DishService dishService;

    @Autowired
    private DishFlavorService dishFlavorService;

    @Autowired
    private CategoryService categoryService;

    @Autowired
    private RedisTemplate redisTemplate;

    /**
     * 新增菜品
     *
     * @param dishDto
     * @return
     */
    @PostMapping
    public R<String> save(@RequestBody DishDto dishDto) {
        log.info("新增的菜品信息：{}", dishDto.toString());
        dishService.saveWithFlavor(dishDto);
        //清理所有菜品的缓存数据
        /*Set keys = redisTemplate.keys("dishId_*");
        redisTemplate.delete(keys);*/
        //清理该菜品分类的redis数据缓存
        String key ="dishId_"+dishDto.getCategoryId()+"_Status_"+dishDto.getStatus();
        redisTemplate.delete(key);
        return R.success("新增菜品成功");
    }


    /**
     * 菜品分页查询
     *
     * @param page
     * @param pageSize
     * @param name
     * @return
     */
    @GetMapping("/page")
    @ApiOperation(value = "菜品的分页查询")
    public R<Page> page(int page, int pageSize, String name) {

        //构造分页构造对象
        Page<Dish> pageInfo = new Page<>(page, pageSize);
        Page<DishDto> dishDtoPage = new Page<>();
        //条件构造器
        LambdaQueryWrapper<Dish> queryWrapper = new LambdaQueryWrapper<>();
        //添加过滤条件
        queryWrapper.like(name != null, Dish::getName, name);
        //添加排序条件
        queryWrapper.orderByDesc(Dish::getUpdateTime);
        //执行分页查询
        dishService.page(pageInfo, queryWrapper);
        //对象拷贝  忽略records
        BeanUtils.copyProperties(pageInfo, dishDtoPage, "records");
        List<Dish> records = pageInfo.getRecords();
        List<DishDto> list = records.stream().map((item) -> {
            DishDto dishDto = new DishDto();
            BeanUtils.copyProperties(item, dishDto);
            Long categoryId = item.getCategoryId();
            //根据id查询分类对象
            Category category = categoryService.getById(categoryId);
            if (category != null) {
                String categoryName = category.getName();
                dishDto.setCategoryName(categoryName);
            }
            return dishDto;
        }).collect(Collectors.toList());
        dishDtoPage.setRecords(list);
        return R.success(dishDtoPage);
    }

    /**
     *根据体条件查询菜品
     *移动端显示菜品 当点击选择规格时 需要返回菜品的口味表
     * @param dish
     * @return
     */
    @GetMapping("/list")
    public R<List<DishDto>> list(Dish dish) {

        List<DishDto> dishDtoList =null;
        //动态拼接key
        String key ="dishId_"+dish.getCategoryId()+"_Status_"+dish.getStatus();
        //先从redis中获取缓存数据
        dishDtoList= (List<DishDto>) redisTemplate.opsForValue().get(key);
        if (dishDtoList!=null){
            //如果存在,直接返回,无需查询mysql数据库
            return R.success(dishDtoList);
        }

        //如果不存在,查询mysql数据库,并将查询到的菜品数据缓存到redis中
        //构造查询条件
        LambdaQueryWrapper<Dish> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(dish.getCategoryId() != null, Dish::getCategoryId, dish.getCategoryId());
        //只查询状态为1  起售的菜品
        queryWrapper.eq(Dish::getStatus, 1);
        //添加排序的条件
        queryWrapper.orderByAsc(Dish::getSort).orderByDesc(Dish::getUpdateTime);
        List<Dish> list = dishService.list(queryWrapper);
        dishDtoList = list.stream().map((item) -> {
            DishDto dishDto = new DishDto();
            BeanUtils.copyProperties(item, dishDto);
            //根据categoryId查询出对应的分类名
            Long categoryId = item.getCategoryId();
            Category category = categoryService.getById(categoryId);
            if (!ObjectUtils.isEmpty(category)) {
                dishDto.setCategoryName(category.getName());
            }
            //根据dishId查询对应的口味
            Long dishId = item.getId();
            LambdaQueryWrapper<DishFlavor> lambdaQueryWrapper = new LambdaQueryWrapper<>();
            lambdaQueryWrapper.eq(DishFlavor::getDishId, dishId);
            List<DishFlavor> dishFlavorList = dishFlavorService.list(lambdaQueryWrapper);
            dishDto.setFlavors(dishFlavorList);
            return dishDto;
        }).collect(Collectors.toList());

        //将查询到的菜品数据缓存到redis中
        redisTemplate.opsForValue().set(key,dishDtoList,60, TimeUnit.MINUTES);
        return R.success(dishDtoList);

    }

    /**
     * 修改菜品时，根据id查询菜品信息和对应的口味信息
     */
    @GetMapping("/{id}")
    public R<DishDto> getDishAndFlavor(@PathVariable Long id) {
        DishDto dishDto = dishService.getByIdWithFlvor(id);

        return R.success(dishDto);
    }


    /**
     * 修改菜品
     *
     * @param dishDto
     * @return
     */
    @PutMapping
    public R<String> update(@RequestBody DishDto dishDto) {
        log.info("修改的菜品信息：{}", dishDto.toString());
        dishService.updateWithFlavor(dishDto);
        //清理所有菜品的缓存数据
        /*Set keys = redisTemplate.keys("dishId_*");
        redisTemplate.delete(keys);*/
        //清理该菜品分类的redis数据缓存
        String key ="dishId_"+dishDto.getCategoryId()+"_Status_"+dishDto.getStatus();
        redisTemplate.delete(key);
        return R.success("修改菜品成功");
    }

    /**
     * 根据条件查询菜品
     * @param dish
     * @return
     */
   /* @GetMapping("/list")
    public R<List<Dish>> list(Dish dish) {
        //构造查询条件
        LambdaQueryWrapper<Dish> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(dish.getCategoryId() != null, Dish::getCategoryId, dish.getCategoryId());
        //只查询状态为1  起售的菜品
        queryWrapper.eq(Dish::getStatus, 1);
        //添加排序的条件
        queryWrapper.orderByAsc(Dish::getSort).orderByDesc(Dish::getUpdateTime);
        List<Dish> list = dishService.list(queryWrapper);
        return R.success(list);
    }*/

    /**
     * 批量停售 起售
     *
     * @param status
     * @param ids
     * @return
     */
    @PostMapping("/status/{status}")
    public R<String> updateDishStatus(@PathVariable Integer status, Long[] ids) {
        List<Long> list = Arrays.asList(ids);
        //条件构造器
        LambdaUpdateWrapper<Dish> updateWrapper = new LambdaUpdateWrapper<>();
        //添加查询条件
        updateWrapper.set(Dish::getStatus, status);
        updateWrapper.in(Dish::getId, ids);
        dishService.update(updateWrapper);
        return R.success("菜品状态修改成功!");
    }


    @DeleteMapping
    public R<String> deleteDish(Long[] ids) {
        log.info("删除的菜品信息:{}", ids);
        //删除菜品时 检查菜品所关联的套餐是否在售
        dishService.deleteWithCheck(ids);
        //当删除完菜品之后,直接清理所有菜品的缓存数据
        Set keys = redisTemplate.keys("dishId_*");
        redisTemplate.delete(keys);


        return R.success("菜品删除成功");
    }
}
